Mulciber, a Slytherin student at the time, attempted to use Dark Magic against her, although he and his friends Avery and Severus Snape described it as “a laugh”. In her fifth year, Mary heard that Snape, who had called Lily Evans a Mudblood after being insulted by James Potter and Sirius Black, was planning to spend the night sleeping outside Gryffindor Tower in order that he might apologise to her, and told Lily of this.